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Related Concept Videos

Language01:16

Language

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Language is a unique communication system that uses words and systematic rules to organize and transmit information. Unlike other forms of communication, which may involve postures, movements, odors, or vocalizations, language relies on symbols and grammar. This makes human communication distinct from that of other species, who also communicate but do not use language in the same way humans do.
Corballis and Suddendorf (2007) and Tomasello and Rakoczy (2003) highlight the role of language in...
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Components of Language01:24

Components of Language

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Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
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Language Development01:22

Language Development

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Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
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Language and Cognition01:27

Language and Cognition

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Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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Dehydration Synthesis01:15

Dehydration Synthesis

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Overview
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
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Synthesis and Decomposition Reactions02:17

Synthesis and Decomposition Reactions

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Synthesis and decomposition are two types of redox reactions. Synthesis means to make something, whereas decomposition means to break something. The reactions are accompanied by chemical and energy changes. 
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Related Experiment Video

Updated: Feb 12, 2026

Involving Individuals with Developmental Language Disorder and Their Parents/Carers in Research Priority Setting
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Automated Language Environment Analysis: A Research Synthesis.

Charles R Greenwood1, Alana G Schnitz1, Dwight Irvin1

  • 1Juniper Gardens Children's Project, The University of Kansas, Kansas City.

American Journal of Speech-Language Pathology
|March 30, 2018
PubMed
Summary
This summary is machine-generated.

The Language Environment Analysis (LENA®) system effectively measures language environments for children and adults. This review confirms LENA

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Area of Science:

  • Speech and Language Pathology
  • Developmental Psychology
  • Computational Linguistics

Background:

  • The Language Environment Analysis (LENA®) system offers a novel approach to quantifying spoken language exposure.
  • Measuring the language environment is crucial for understanding child language development and the Word Gap.
  • Previous research highlighted the need for efficient and valid methods to analyze naturalistic language interactions.

Purpose of the Study:

  • To systematically review the current dimensions and applications of LENA research.
  • To assess LENA's sensitivity in detecting variations across different populations and language environments.
  • To evaluate the progress made in addressing the Word Gap using LENA technology.

Main Methods:

  • A systematic literature review was conducted, identifying 83 peer-reviewed articles utilizing LENA.
  • Fifty-three articles meeting inclusion criteria were analyzed to synthesize findings.
  • The review focused on studies examining LENA's automated speech indicators and audio environment measures.

Main Results:

  • LENA research spans diverse populations, including young children, older adults, and teachers, focusing on communication environments.
  • LENA's automated speech indicators (adult input, interaction, child production) demonstrate high validity, accuracy, and sensitivity.
  • Intervention studies using LENA have primarily involved small-scale pilot experiments on parent education and feedback.

Conclusions:

  • Automated language analysis, exemplified by LENA, is now an established tool in language research and practice.
  • LENA has proven effective in measuring language environments and identifying differences across various contexts.
  • Further research is needed to explore LENA's full potential in intervention and addressing developmental disparities.